Sigmocheirini
Causey, 1955
Genus Guides
1Sigmocheirini is a tribe of flat-backed millipedes (Order Polydesmida) in the Xystodesmidae, established by Causey in 1955. The tribe contains the Sigmocheir, whose are to California's Sierra Nevada foothills. Members of this tribe exhibit the characteristic flattened body form typical of xystodesmid millipedes.
Pronunciation
How to pronounce Sigmocheirini: /sɪɡ.moʊˈkɪəˌraɪnaɪ/
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Habitat
Foothill regions of the Sierra Nevada mountains in California, spanning from Placer County south to northern Tulare County. Specific microhabitat preferences within this range are not documented at the tribal level.
Distribution
Restricted to California, USA. The constituent Sigmocheir occurs in Sierra Nevada foothills from Placer County southward to the northern portion of Tulare County. The tribal distribution may be broader if additional genera are included.
More Details
Taxonomic note
The tribe Sigmocheirini was established by Causey in 1955. The Sigmocheir, which constitutes this tribe, was originally described by Chamberlin in 1951. The tribal placement and composition may require revision as phylogenetic studies of Xystodesmidae progress.